Shift control method for electric vehicle

Details Shift control method for electric vehicle Shift control method for electric vehicle

1995-05-30

1997-08-12

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Electric engine

With transmission control

477 3, 477 8, 477120, 477905, 180 658, H02P 1700

Patent

active

056559909

ABSTRACT:
A shift map used for controlling the shifting of a transmission in an electric vehicle based on the accelerator opening degree and the vehicle speed as parameters has a medium shift stage region in a higher shift stage region established in a medium vehicle speed operation region at a lower accelerator opening degree. When the vehicle travels down a downward slope at the lower accelerator opening degree while generating a regenerative braking force, the transmission is downshifted from a higher shift stage to a medium shift stage to increase the regenerative braking force, thereby providing an enhancement in braking feeling and an improvement in energy recovery efficiency.

REFERENCES:
patent: 4246807 (1981-01-01), Kofink
patent: 4996893 (1991-03-01), Nakamura et al.
patent: 5231897 (1993-08-01), Morita
patent: 5355749 (1994-10-01), Obara et al.
patent: 5393278 (1995-02-01), Kyushima et al.
patent: 5454763 (1995-10-01), Ikebuchi et al.
patent: 5468194 (1995-11-01), Hayashi

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